Zobrazeno 1 - 10
of 108
pro vyhledávání: '"Oh, Jung Hyun"'
We develop a theory of adiabatic orbital pumping, highlighting qualitative differences from spin pumping. An oscillating magnetic field pumps not only orbital angular momentum current but also orbital angular position current. The latter, which has n
Externí odkaz:
http://arxiv.org/abs/2311.00362
Autor:
Ko, Hye-Won, Park, Hyeon-Jong, Go, Gyungchoon, Oh, Jung Hyun, Kim, Kyoung-Whan, Lee, Kyung-Jin
We theoretically and numerically show that longitudinal orbital currents in ferromagnets depend on the magnetization direction, which contribute to the anisotropic magnetoresistance (AMR). This orbital contribution to AMR arises from the momentum-dep
Externí odkaz:
http://arxiv.org/abs/2004.04370
Autor:
Park, Hyeon-Jong, Jeong, Yunboo, Oh, Se-Hyeok, Go, Gyungchoon, Oh, Jung Hyun, Kim, Kyoung-Whan, Lee, Hyun-Woo, Lee, Kyung-Jin
Publikováno v:
Phys. Rev. B 101, 144431 (2020)
We numerically compute current-induced spin-transfer torques for antiferromagnetic domain walls, based on a linear response theory in a tight-binding model. We find that, unlike for ferromagnetic domain wall motion, the contribution of adiabatic spin
Externí odkaz:
http://arxiv.org/abs/2001.07351
Akademický článek
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Akademický článek
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Autor:
Yu, Jiawei, Bang, Do, Mishra, Rahul, Ramaswamy, Rajagopalan, Oh, Jung Hyun, Park, Hyeon-Jong, Jeong, Yunboo, Van Thach, Pham, Lee, Dong-Kyu, Go, Gyungchoon, Lee, Seo-Won, Wang, Yi, Shi, Shuyuan, Qiu, Xuepeng, Awano, Hiroyuki, Lee, Kyung-Jin, Yang, Hyunsoo
Ferromagnetic spintronics has been a main focus as it offers non-volatile memory and logic applications through current-induced spin-transfer torques. Enabling wider applications of such magnetic devices requires a lower switching current for a small
Externí odkaz:
http://arxiv.org/abs/1810.10404
Publikováno v:
Phys. Rev. B 97, 014430 (2018)
For a thin ferromagnetic film with the Dzyaloshinskii-Moriya interaction (DMI), we derive an expression of the extrinsic ferromagnetic resonance (FMR) linewidth in a quantum mechanical way, taking into account scatterings from structural inhomogeneit
Externí odkaz:
http://arxiv.org/abs/1711.02263
We formulate the theory of electron transport through coupled-quantum dots by extending the auxiliary operator representation. By using the generating functional technique, we derive the exact expressions for currents, dot-occupation numbers and spin
Externí odkaz:
http://arxiv.org/abs/1010.1576
We derive self-consistent expressions of current and noise for single-electron transistors driven by time-dependent perturbations. We take into account effects of the electrical environment, higher-order co-tunneling, and time-dependent perturbations
Externí odkaz:
http://arxiv.org/abs/cond-mat/0503088
Publikováno v:
Phys. Rev. B 68, 205403 (2003)
Currents of the single-electron transistors driven by time-dependent fields via external dissipative circuits are investigated theoretically. By expressing the external circuit in terms of driven harmonic oscillators and using the reduced-density ope
Externí odkaz:
http://arxiv.org/abs/cond-mat/0309697